diff options
Diffstat (limited to 'src/plugins/platforms/xcb/qglxintegration.cpp')
| -rw-r--r-- | src/plugins/platforms/xcb/qglxintegration.cpp | 216 |
1 files changed, 171 insertions, 45 deletions
diff --git a/src/plugins/platforms/xcb/qglxintegration.cpp b/src/plugins/platforms/xcb/qglxintegration.cpp index 67235e0ef1..c0be836bce 100644 --- a/src/plugins/platforms/xcb/qglxintegration.cpp +++ b/src/plugins/platforms/xcb/qglxintegration.cpp @@ -1,40 +1,32 @@ /**************************************************************************** ** -** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the plugins of the Qt Toolkit. ** -** $QT_BEGIN_LICENSE:LGPL$ +** $QT_BEGIN_LICENSE:LGPL21$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information ** use the contact form at http://qt.digia.com/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception +** rights. These rights are described in the Digia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** ** $QT_END_LICENSE$ ** ****************************************************************************/ @@ -54,6 +46,7 @@ #include "qglxintegration.h" #include <QtPlatformSupport/private/qglxconvenience_p.h> +#include <QtPlatformHeaders/QGLXNativeContext> #if defined(Q_OS_LINUX) || defined(Q_OS_BSD4) #include <dlfcn.h> @@ -83,31 +76,32 @@ typedef GLXContext (*glXCreateContextAttribsARBProc)(Display*, GLXFBConfig, GLXC #define GL_CONTEXT_FLAG_DEBUG_BIT 0x00000002 #endif -static Window createDummyWindow(QXcbScreen *screen, XVisualInfo *visualInfo) +static Window createDummyWindow(Display *dpy, XVisualInfo *visualInfo, int screenNumber, Window rootWin) { - Colormap cmap = XCreateColormap(DISPLAY_FROM_XCB(screen), screen->root(), visualInfo->visual, AllocNone); + Colormap cmap = XCreateColormap(dpy, rootWin, visualInfo->visual, AllocNone); XSetWindowAttributes a; - a.background_pixel = WhitePixel(DISPLAY_FROM_XCB(screen), screen->screenNumber()); - a.border_pixel = BlackPixel(DISPLAY_FROM_XCB(screen), screen->screenNumber()); + a.background_pixel = WhitePixel(dpy, screenNumber); + a.border_pixel = BlackPixel(dpy, screenNumber); a.colormap = cmap; + a.override_redirect = true; - Window window = XCreateWindow(DISPLAY_FROM_XCB(screen), screen->root(), + Window window = XCreateWindow(dpy, rootWin, 0, 0, 100, 100, 0, visualInfo->depth, InputOutput, visualInfo->visual, - CWBackPixel|CWBorderPixel|CWColormap, &a); + CWBackPixel|CWBorderPixel|CWColormap|CWOverrideRedirect, &a); #ifndef QT_NO_DEBUG - XStoreName(DISPLAY_FROM_XCB(screen), window, "Qt GLX dummy window"); + XStoreName(dpy, window, "Qt GLX dummy window"); #endif - XFreeColormap(DISPLAY_FROM_XCB(screen), cmap); + XFreeColormap(dpy, cmap); return window; } -static Window createDummyWindow(QXcbScreen *screen, GLXFBConfig config) +static Window createDummyWindow(Display *dpy, GLXFBConfig config, int screenNumber, Window rootWin) { - XVisualInfo *visualInfo = glXGetVisualFromFBConfig(DISPLAY_FROM_XCB(screen), config); + XVisualInfo *visualInfo = glXGetVisualFromFBConfig(dpy, config); if (!visualInfo) qFatal("Could not initialize GLX"); - Window window = createDummyWindow(screen, visualInfo); + Window window = createDummyWindow(dpy, visualInfo, screenNumber, rootWin); XFree(visualInfo); return window; } @@ -160,14 +154,25 @@ static void updateFormatFromContext(QSurfaceFormat &format) } } -QGLXContext::QGLXContext(QXcbScreen *screen, const QSurfaceFormat &format, QPlatformOpenGLContext *share) +QGLXContext::QGLXContext(QXcbScreen *screen, const QSurfaceFormat &format, QPlatformOpenGLContext *share, + const QVariant &nativeHandle) : QPlatformOpenGLContext() , m_display(DISPLAY_FROM_XCB(screen)) + , m_config(0) , m_context(0) , m_shareContext(0) , m_format(format) , m_isPBufferCurrent(false) , m_swapInterval(-1) + , m_ownsContext(nativeHandle.isNull()) +{ + if (nativeHandle.isNull()) + init(screen, share); + else + init(screen, share, nativeHandle); +} + +void QGLXContext::init(QXcbScreen *screen, QPlatformOpenGLContext *share) { if (m_format.renderableType() == QSurfaceFormat::DefaultRenderableType) m_format.setRenderableType(QSurfaceFormat::OpenGL); @@ -178,6 +183,7 @@ QGLXContext::QGLXContext(QXcbScreen *screen, const QSurfaceFormat &format, QPlat m_shareContext = static_cast<const QGLXContext*>(share)->glxContext(); GLXFBConfig config = qglx_findConfig(DISPLAY_FROM_XCB(screen),screen->screenNumber(),m_format); + m_config = config; XVisualInfo *visualInfo = 0; Window window = 0; // Temporary window used to query OpenGL context @@ -195,21 +201,21 @@ QGLXContext::QGLXContext(QXcbScreen *screen, const QSurfaceFormat &format, QPlat && (m_format.renderableType() != QSurfaceFormat::OpenGLES || (supportsProfiles && glxExt.contains("GLX_EXT_create_context_es2_profile")))) { // Try to create an OpenGL context for each known OpenGL version in descending // order from the requested version. - const int requestedVersion = format.majorVersion() * 10 + qMin(format.minorVersion(), 9); + const int requestedVersion = m_format.majorVersion() * 10 + qMin(m_format.minorVersion(), 9); QVector<int> glVersions; if (m_format.renderableType() == QSurfaceFormat::OpenGL) { - if (requestedVersion > 43) + if (requestedVersion > 45) glVersions << requestedVersion; // Don't bother with versions below 2.0 - glVersions << 43 << 42 << 41 << 40 << 33 << 32 << 31 << 30 << 21 << 20; + glVersions << 45 << 44 << 43 << 42 << 41 << 40 << 33 << 32 << 31 << 30 << 21 << 20; } else if (m_format.renderableType() == QSurfaceFormat::OpenGLES) { - if (requestedVersion > 30) + if (requestedVersion > 31) glVersions << requestedVersion; // Don't bother with versions below ES 2.0 - glVersions << 30 << 20; + glVersions << 31 << 30 << 20; // ES does not support any format option m_format.setOptions(QSurfaceFormat::FormatOptions()); } @@ -282,10 +288,10 @@ QGLXContext::QGLXContext(QXcbScreen *screen, const QSurfaceFormat &format, QPlat // Get the basic surface format details if (m_context) - qglx_surfaceFormatFromGLXFBConfig(&m_format, DISPLAY_FROM_XCB(screen), config, m_context); + qglx_surfaceFormatFromGLXFBConfig(&m_format, DISPLAY_FROM_XCB(screen), config); // Create a temporary window so that we can make the new context current - window = createDummyWindow(screen, config); + window = createDummyWindow(DISPLAY_FROM_XCB(screen), config, screen->screenNumber(), screen->root()); } else { // requesting an OpenGL ES context requires glXCreateContextAttribsARB, so bail out if (m_format.renderableType() == QSurfaceFormat::OpenGLES) @@ -303,26 +309,141 @@ QGLXContext::QGLXContext(QXcbScreen *screen, const QSurfaceFormat &format, QPlat } // Create a temporary window so that we can make the new context current - window = createDummyWindow(screen, visualInfo); + window = createDummyWindow(DISPLAY_FROM_XCB(screen), visualInfo, screen->screenNumber(), screen->root()); XFree(visualInfo); } // Query the OpenGL version and profile if (m_context && window) { + GLXContext prevContext = glXGetCurrentContext(); + GLXDrawable prevDrawable = glXGetCurrentDrawable(); glXMakeCurrent(m_display, window, m_context); updateFormatFromContext(m_format); // Make our context non-current - glXMakeCurrent(m_display, 0, 0); + glXMakeCurrent(m_display, prevDrawable, prevContext); } // Destroy our temporary window XDestroyWindow(m_display, window); } +void QGLXContext::init(QXcbScreen *screen, QPlatformOpenGLContext *share, const QVariant &nativeHandle) +{ + if (!nativeHandle.canConvert<QGLXNativeContext>()) { + qWarning("QGLXContext: Requires a QGLXNativeContext"); + return; + } + QGLXNativeContext handle = nativeHandle.value<QGLXNativeContext>(); + GLXContext context = handle.context(); + if (!context) { + qWarning("QGLXContext: No GLXContext given"); + return; + } + + // Use the provided Display, if available. If not, use our own. It may still work. + Display *dpy = handle.display(); + if (!dpy) + dpy = DISPLAY_FROM_XCB(screen); + + // Legacy contexts created using glXCreateContext are created using a visual + // and the FBConfig cannot be queried. The only way to adapt these contexts + // is to figure out the visual id. + XVisualInfo *vinfo = 0; + // If the VisualID is provided use it. + VisualID vid = handle.visualId(); + if (!vid) { + // In the absence of the VisualID figure it out from the window. + Window wnd = handle.window(); + if (wnd) { + XWindowAttributes attrs; + XGetWindowAttributes(dpy, wnd, &attrs); + vid = XVisualIDFromVisual(attrs.visual); + } + } + if (vid) { + XVisualInfo v; + v.screen = screen->screenNumber(); + v.visualid = vid; + int n = 0; + vinfo = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask, &v, &n); + if (n < 1) { + XFree(vinfo); + vinfo = 0; + } + } + + // For contexts created with an FBConfig using the modern functions providing the + // visual or window is not mandatory. Just query the config from the context. + GLXFBConfig config = 0; + if (!vinfo) { + int configId = 0; + if (glXQueryContext(dpy, context, GLX_FBCONFIG_ID, &configId) != Success) { + qWarning("QGLXContext: Failed to query config from the provided context"); + return; + } + + GLXFBConfig *configs; + int numConfigs = 0; + static const int attribs[] = { GLX_FBCONFIG_ID, configId, None }; + configs = glXChooseFBConfig(dpy, screen->screenNumber(), attribs, &numConfigs); + if (!configs || numConfigs < 1) { + qWarning("QGLXContext: Failed to find config"); + return; + } + if (configs && numConfigs > 1) // this is suspicious so warn but let it continue + qWarning("QGLXContext: Multiple configs for FBConfig ID %d", configId); + + config = configs[0]; + // Store the config. + m_config = config; + } + + Q_ASSERT(vinfo || config); + + int screenNumber = DefaultScreen(dpy); + Window window; + if (vinfo) + window = createDummyWindow(dpy, vinfo, screenNumber, RootWindow(dpy, screenNumber)); + else + window = createDummyWindow(dpy, config, screenNumber, RootWindow(dpy, screenNumber)); + if (!window) { + qWarning("QGLXContext: Failed to create dummy window"); + return; + } + + // Update OpenGL version and buffer sizes in our format. + GLXContext prevContext = glXGetCurrentContext(); + GLXDrawable prevDrawable = glXGetCurrentDrawable(); + if (!glXMakeCurrent(dpy, window, context)) { + qWarning("QGLXContext: Failed to make provided context current"); + return; + } + m_format = QSurfaceFormat(); + m_format.setRenderableType(QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGL + ? QSurfaceFormat::OpenGL : QSurfaceFormat::OpenGLES); + updateFormatFromContext(m_format); + if (vinfo) + qglx_surfaceFormatFromVisualInfo(&m_format, dpy, vinfo); + else + qglx_surfaceFormatFromGLXFBConfig(&m_format, dpy, config); + glXMakeCurrent(dpy, prevDrawable, prevContext); + XDestroyWindow(dpy, window); + + if (vinfo) + XFree(vinfo); + + // Success. Store the context. From this point on isValid() is true. + m_context = context; + + if (share) + m_shareContext = static_cast<const QGLXContext*>(share)->glxContext(); +} + QGLXContext::~QGLXContext() { - glXDestroyContext(m_display, m_context); + if (m_ownsContext) + glXDestroyContext(m_display, m_context); } static QXcbScreen *screenForPlatformSurface(QPlatformSurface *surface) @@ -336,6 +457,11 @@ static QXcbScreen *screenForPlatformSurface(QPlatformSurface *surface) return Q_NULLPTR; } +QVariant QGLXContext::nativeHandle() const +{ + return QVariant::fromValue<QGLXNativeContext>(QGLXNativeContext(m_context)); +} + bool QGLXContext::makeCurrent(QPlatformSurface *surface) { bool success = false; @@ -404,11 +530,11 @@ void QGLXContext::swapBuffers(QPlatformSurface *surface) if (surface->surface()->surfaceClass() == QSurface::Window) { QXcbWindow *platformWindow = static_cast<QXcbWindow *>(surface); - // OpenGL context might be bound to a non-gui thread - // use QueuedConnection to sync the window from the platformWindow's thread - // as QXcbWindow is no QObject, a wrapper slot in QXcbConnection is used. + // OpenGL context might be bound to a non-gui thread use QueuedConnection to sync + // the window from the platformWindow's thread as QXcbWindow is no QObject, an + // event is sent to QXcbConnection. (this is faster than a metacall) if (platformWindow->needsSync()) - QMetaObject::invokeMethod(screenForPlatformSurface(surface)->connection(), "syncWindow", Qt::QueuedConnection, Q_ARG(QXcbWindow*, platformWindow)); + platformWindow->postSyncWindowRequest(); } } |